139715 has 4 divisors (see below), whose sum is σ = 167664.
Its totient is φ = 111768.
The previous prime is 139709. The next prime is 139721. The reversal of 139715 is 517931.
It is a semiprime because it is the product of two primes.
It is an interprime number because it is at equal distance from previous prime (139709) and next prime (139721).
It is a cyclic number.
It is not a de Polignac number, because 139715 - 28 = 139459 is a prime.
It is a Duffinian number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13967 + ... + 13976.
It is an arithmetic number, because the mean of its divisors is an integer number (41916).
2139715 is an apocalyptic number.
139715 is a deficient number, since it is larger than the sum of its proper divisors (27949).
139715 is an equidigital number, since it uses as much as digits as its factorization.
139715 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 27948.
The product of its digits is 945, while the sum is 26.
The square root of 139715 is about 373.7846973861.
The cubic root of 139715 is about 51.8896823007.
The spelling of 139715 in words is "one hundred thirty-nine thousand, seven hundred fifteen".